S
M
T
W
T
F
S
28
100°
78°
29
97°
74°
30
97°
74°
1
98°
70°
2
100°
69°
3
100°
71°
4
100°
77°
5
102°
78°
6
106°
78°
7
107°
82°
8
106°
83°
9
107°
82°
10
104°
81°
11
105°
76°
12
103°
71°
13
95°
78°
14
100°
81°
15
102°
79°
16
97°
75°
17
94°
76°
18
97°
78°
19
98°
78°
20
99°
77°
21
97°
78°
22
98°
78°
23
100°
78°
24
101°
80°
25
102°
79°
26
104°
76°
27
107°
81°
28
106°
80°
29
101°
76°
30
98°
75°
31
99°
75°
1
99°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Santa Rosa
Santa Rosa's July 2026 forecast shows daily high temperatures ranging from 94° to 107°, with overnight lows between 75° and 81°. The average high for July is 100° with an average low of 78°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Santa Rosa. See also: August | September | October.